Control Statements

A smartwatch needs to alert the user when the battery drops below 20%. Which control statement should be used?

• Switch-case

• for loop

• if-else

• do-while

A game controller must perform different actions when different buttons are pressed (A = Jump, B = Crouch, etc.). What is the best control structure?

• if-else

• nested loops

• switch-case

• break

int x = 5;

if (x > 3)

printf("Hello");

else

printf("Bye");

• Hello

• Bye

• error

• No output

You’re building an automation system for a smart air conditioner. Based on temperature input, it decides to turn the fan ON or OFF. What would you use?

• switch-cse

• if-else

Which of the following is the correct syntax for an if-else statement in C?

• if condition then { } else { }

• if (condition) { } else { }

• if {condition} then { } else { }

• if condition: { } else: { }

Which of the following is NOT true about the switch-case statement in C?

• It can evaluate expressions like x > 10

• It uses case labels for matching values

• It can replace lengthy nested if-else structures

You are designing a coffee machine. It should display different prices based on size (S, M, L). Which control is most appropriate?

• if-else with relational operators

• for loop with size check

• switch-case with character input

int x = 10;

if (x == 10)

printf("Equal");

else

printf("Not Equal");

• Equal

• Not Equal

• 10

• Compilation error

Which of the following correctly represents the logical flow for an if-else program that activates a car’s wipers based on rain level?

• Check if rain level > threshold → Read rain sensor data → Activate wipers → Else keep off

• Activate wipers → Else keep off → Read rain sensor data → Check rain level

• Read rain sensor data → Check if rain level > threshold → Activate wipers → Else keep off

• Read rain sensor data → Activate wipers → Check if rain level > threshold → Else keep off

Complete the C code that turns on the heater if the temperature is less than 18°C:

if (temperature < 18) {

printf("__________");

}

• Turn AC On

• Fan Speed = Low

• Turn Heater On